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Praise and Reviews:

“Its quirky, has a great overall arc and when added to a criminal element goes on to show how tricky policing the unusual can be. Its definitely something that I would recommend to others and a series that has done nothing but entertain since its original release.” – Falcata Times

“Known Devil is a fun book. It is exactly the entertaining, action packed, supernatural beings filled novel I was hoping for. Whether you’re familiar with the supernatural detective genre or new to this style of noir detective fiction, Known Devil by Justin Gustainis is a pleasurable read.” – Luxury Reading

“It was an enjoyable and well-written read in the series. I like that Stan is changing and adapting to the changes in the world around him, even if it’s making him color outside the lines a little. I highly recommend this to people who want something a little gritty, a little dark, a bit nostalgic and different from the average Urban Fantasy novel.” – Fangs Wands and Fairy Dust

“I like Stan and Karl a great deal, the sarcasm that is more of a native tongue throughout the story lending the entire narrative a gritty, yet resignedly amused feel that I really appreciated. With this many different kinds of creatures in play there seems to be no end to the possibilities in this series, and I would very much like to see what Mr. Gustainis might have in store for Stan and Karl in the future.” – That’s What I’m Talking About

“I had a great time with Known Devil and tore through it in a single sitting – with a break for food and putting the kids to bed – chuckling all the while and reading out good bits to my husband. Like Evil Dark, Known Devil stands alone quite well and you don’t have to read the previous books to enjoy this one. However, if you haven’t read any of these books before then you are in for a treat as they are hugely enjoyable.” – A Fantastical Librarian

“I love the mix of genres that Justin Gustainis has created in the Occult Crimes Unit Investigation Series, and Known Devil, continues his trend of smart, dark, fun reads. These are not just crime/detective stories and they’re not just urban myth stories – they’re excellent stories about relationships and diversity. I’m a complete fan and I can hardly wait for book #4!” – Popcorn Reads

“Gustainis writes page turners; once I start I cannot stop. His characters have enough of the classic archetypes mixed with the new of the supernatural to create highly entertaining reads. Humor, action, and magic combine to make a Dragnet meets Supernatural experience. When a new book in this series comes out I’ll be first in line to purchase it.” – SciFi Pulse

“Drugs and crime fiction go together like a horse and carriage, or gods and monsters. So when the Occult Crimes Unit Investigators discover that the elves have finally found something that can seriously mess with their heads, it’s clear the shit has hit the fantastic. Justin Gustainis is back, digging into the darkest corners of the hidden world, in a wildly entertaining series where all hell breaking loose is just business as normal.” – Simon R. Green

For Hard Spell:

“A cool mix of cop show and creature feature. Gustainis had me at ‘meth-addicted goblins’.”
– Marcus Pelegrimas, author of the Skinners series

“I enjoyed every page of Hard Spell. If Sam Spade and Jack Fleming were somehow melted together, you’d get Stan Markowski. I can’t wait to see what Gustainis does next.”
– Lilith Saintcrow, author of Night Shift and Working for the Devil

For Evil Dark:

“Fans of TV shows like Supernatural and Grimm will find this worth a read, and it’s a lovely mix of real world nightmare and fantastic horror.”
– Ed Fortune, Starburst Magazine

“Gustainis has proved himself time and time again, and it is no surprise to me that Evil Dark is another cracking novel.”
– Theresa Derwin, Terror-Tree

“I thoroughly enjoyed Evil Dark and would recommend it to those readers that enjoy paranormal crime novels. Justin Gustainis has made it onto my must-read-author list and I look forward to what he has in store for us next.”
– Sheila at Dark Faerie Tales